/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.uima.tools.cvd.control;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import org.apache.uima.tools.cvd.FSNode;
import org.apache.uima.tools.cvd.FSTreeNode;
import org.apache.uima.tools.cvd.MainFrame;
/**
* Handle selection of annotations in annotation frame. If selected node represents an annotation,
* highlight the corresponding extent in the text.
*/
public class FSTreeSelectionListener implements TreeSelectionListener {
private final MainFrame main;
public FSTreeSelectionListener(MainFrame frame) {
this.main = frame;
}
/**
* @see javax.swing.event.TreeSelectionListener#valueChanged(javax.swing.event.TreeSelectionEvent)
*/
public void valueChanged(TreeSelectionEvent event) {
// System.out.println("");
FSTreeNode protoNode = (FSTreeNode) this.main.getFsTree().getLastSelectedPathComponent();
if (!(protoNode instanceof FSNode)) {
return;
}
FSNode node = (FSNode) protoNode;
if (node == null) {
return;
}
// Remeber start of current selection.
final int currentSelStart = this.main.getTextArea().getSelectionStart();
if (node.isAnnotation()) {
if (null != this.main.getCas().getDocumentText()) {
this.main.getTextArea().setSelectionStart(node.getStart());
this.main.getTextArea().setSelectionEnd(node.getEnd());
// System.out.println(
// "Setting selection from " + node.getStart() + " to " +
// node.getEnd());
this.main.getTextArea().getCaret().setSelectionVisible(true);
}
} else {
this.main.getTextArea().setSelectionEnd(currentSelStart);
}
}
}